Although manufacturing in the Dayton region has been on a big rebound, several small companies such as Shelton have closed during the last year.

That includes TVR Machine LLC in Dayton and Corona, Calif.-based Circor Aerospace Inc. in Kettering.

In the case of TVR, its owners didn’t want to take on new debt for equipment needed to grow the company. Circor consolidated operations to California.

Despite the closings, manufacturing here is still robust. The industry drives $5.6 billion in annual payroll, nearly 20 percent of the total payroll in a 14-county region surrounding Dayton, according to Dayton Region Manufacturers Association.